Fusion GPS has gotten all the headlines. But there was a second, even more powerful and mysterious opposition research and intelligence firm lurking about with significant political and financial links to former Secretary of State Hillary Clinton and her 2016 campaign for president against Donald Trump.

Meet London-based Hakluyt & Co., founded by three former British intelligence operatives in 1995 to provide the kind of otherwise inaccessible research for which select governments and Fortune 500 corporations pay huge sums.